import Vue from 'vue'
import Router from 'vue-router'
import store from '@/vuex/store'
Vue.use(Router)

let router = new Router({
 routes: [
  {
   path: '/login',
   name: 'login',
   meta: {requireAuth: false},
   // 模塊使用異步加載
   component: (resolve) => require(['../components/login/login.vue'], resolve)
  }]
})
// 攔截登錄，token驗證
router.beforeEach((to, from, next) => {
 if (to.meta.requireAuth === undefined) {
  if (store.state.token) {
   next()
  } else {
   next({
    path: '/login'
   })
  }
 } else {
  next()
 }
})
export default router

let router = new Router({
 routes: [
  {
   path: '/login',
   name: 'login',
   meta: {requireAuth: false},
   component: (resolve) => require(['../components/login/login.vue'], resolve)
  }，
  {
    path: '/',
    redirect: '/layout'
  },
  {
    path: '/layout',
    component: (resolve) => require(['../layout.vue'], resolve),
    children: [
      {
        path: 'index', 
        meta: {
          type: '1',    //控制是否顯示隱藏 1顯示，2隱藏
          code: 00010001, // 后面需要控制路由高亮
          title: '首頁',  // 菜單名稱
          permissonList: [] // 權(quán)限列表
        }
        component: (resolve) => require(['@/components/index/index.vue'], resolve)
      },
      {
      ...
      }   
    ]
  }]
})

// 登錄
   login () {
    let params = {
     account: this.loginForm.username,
     password: encrypt(this.loginForm.password)
    }
    this.loading = true
    this.$http.post(this.$bumng + '/login', this.$HP(params))
     .then((res) => {
      this.loging = false
      console.info('菜單列表：', res)
      if (res.resultCode === this.$state_ok) {
       // 合并一級菜單和二級菜單，便于顯示
       let menus = handleMenu.mergeSubInRoot(res.rootList, res.subList)
       // 本地化處理好的菜單列表
       this.saveRes({label: 'menuList', value: menus})
       // 根據(jù)subList處理路由
       let routes = handleMenu.mergeRoutes(res.subList)
       // 本地化subList，便于在刷新頁面的時候重新配置路由
       this.saveRes({label: 'subList', value: res.subList})
       // 防止重復配置相同路由
       if (this.$router.options.routes.length <= 1) {
        this.$router.addRoutes(routes)
        // this.$router不是響應式的，所以手動將路由元注入路由對象
        this.$router.options.routes.push(routes)
       }
       this.$router.replace('/layout/index')
      }
     })
     .catch((err) => {
      this.loging = false
      console.error('錯誤：', err)
     })
   },

const routes = [
 {
  path: '/',
  redirect: '/layout'
 },
 {
  path: '/layout',
  component: (resolve) => require(['../layout.vue'], resolve),
  children: []
 }
]
export default {
 /**
  * 合并主菜單和子菜單
  * @param: rootList [Array] 主菜單列表
  * @param: subList [Array] 子菜單
  * */
 mergeSubInRoot (roots, subs) {
  if (roots && subs) {
   for (let i = 0; i < roots.length; i++) {
    let rootCode = roots[i].code
    roots[i].children = []
    for (let j = 0; j < subs.length; j++) {
     if (rootCode === subs[j].code.substring(0, 4)) {
      roots[i].children.push(subs[j])
     }
    }
   }
  }
  return roots
 },
 /**
  * 合并遠程路由到本地路由
  * @param: subList [Array] 遠程路由列表
  * @param: routes [Array] 本地路由列表
  * */
 mergeRoutes (subs) {
  if (subs) {
   for (let i = 0; i < subs.length; i++) {
    let temp = {
     path: subs[i].actUrl,
     name: subs[i].actUrl,
     component: (resolve) => require([`@/components/${subs[i].component}.vue`], resolve),
     meta: {
      type: subs[i].type,
      code: subs[i].code,
      title: subs[i].name,
      permissionList: subs[i].permissionList
     }
    }
    routes[1].children.push(temp)
   }
  }
  return routes
 }
}

<template>
  <div class="mainMenu">
   <el-menu
    class="menubar"
    mode="horizontal"
    :default-active="activeCode"
    background-color="#545c64"
    text-color="#fff"
    active-text-color="#ffd04b">
    <el-menu-item :index="item.code | splitCode" v-for="item in menuList" :key="item.code" @click="switchSubMenu(item)" v-if="item.code !== '0008'">
     <i :class="`iconfont icon-${item.imgUrl}`"></i>
     <span slot="title">{{item.name}}</span>
    </el-menu-item>
   </el-menu>
  </div>
</template>

<script type="text/ecmascript-6">
 import {mapState, mapMutations} from 'vuex'
 export default {
  name: 'menu',
  data () {
   return {
    msg: 'Welcome to Your Vue.js App'
   }
  },
  computed: {
   ...mapState(['menuList']),
   activeCode () {
     // 通過code保證在切換字路由的情況下一級路由也是高亮顯示
    return this.$route.meta.code.substring(0, 4)
   }
  },
  methods: {
   ...mapMutations(['saveRes']),
   // 切換二級路由
   switchSubMenu (route) {
    console.info('路由：', route)
    if (route.actUrl !== 'index') {
     // 用currentSubMenu控制二級路由數(shù)據(jù) 
     this.saveRes({label: 'currentSubMenu', value: route.children})
     this.$router.push(`/layout/${route.children[0].actUrl}`)
    } else {
     // 不存在二級路由隱藏二級 
     this.saveRes({label: 'currentSubMenu', value: ''})
     this.$router.push(`/layout/${route.actUrl}`)
    }
   }
  },
  filters: {
   splitCode (code) {
    return code.substring(0, 4)
   }
  }
 }
</script>

<script>
 import {decrypt} from '@/libs/AES'
 import handleMenu from '@/router/handleMenu'
 export default {
  name: 'app',
  created () {
   // 當this.$router.options.routes的長度為1，且本地緩存存在菜單列表的時候才重新配置路由
   if (this.$router.options.routes.length <= 1 && sessionStorage.getItem('subList')) {
    let subList = JSON.parse(decrypt(sessionStorage.getItem('subList')))
    let routes = handleMenu.mergeRoutes(subList)
    this.$router.addRoutes(routes)
    // this.$router不是響應式的，所以手動將路由元注入路由對象
    this.$router.options.routes.push(routes)
   }
  }
 }
</script>